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Individual sperm selection by microfluidics integrated with interferometric phase microscopy.

Pinkie J Eravuchira1, Simcha K Mirsky1, Itay Barnea1

  • 1Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel.

Methods (San Diego, Calif.)
|September 30, 2017
PubMed
Summary
This summary is machine-generated.

A new platform uses interferometric phase microscopy and microfluidics for objective, real-time sperm selection. This stain-free method enhances sperm analysis for assisted reproductive technologies, potentially increasing pregnancy success rates.

Keywords:
Cell imagingInterferometric phase microscopyMicrofluidicsQuantitative phase imagingSperm analysis

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Area of Science:

  • Reproductive Biology
  • Biomedical Engineering
  • Microscopy

Background:

  • Sperm quality is critical for assisted reproductive technologies (ART) like intracytoplasmic sperm injection (ICSI).
  • Current sperm selection methods often lack objectivity and quantitative analysis.
  • Developing advanced techniques for sperm analysis and selection is essential for improving ART outcomes.

Purpose of the Study:

  • To develop and validate a novel, stain-free platform for real-time quantitative analysis and selection of individual sperm cells.
  • To integrate interferometric phase microscopy (IPM) with microfluidic devices for enhanced sperm selection.
  • To improve the objectivity and efficiency of sperm selection for ICSI and other ART procedures.

Main Methods:

  • Developed an integrated system combining interferometric phase microscopy (IPM) for stain-free sperm imaging and analysis.
  • Utilized a disposable microfluidic device for automated sperm selection and enrichment based on 3D morphology and content.
  • Employed an IPM-based algorithm for quantitative sperm analysis, comparing results with expert visual assessment.

Main Results:

  • Achieved successful sperm cell selection with a selectivity of 89.5±3.5% using the microfluidic device.
  • Demonstrated 100% precision and specificity in sperm cell analysis by comparing IPM-based quantitative data with expert qualitative analysis.
  • Validated the accuracy and reliability of the IPM-based algorithm for sperm analysis.

Conclusions:

  • The integrated IPM and microfluidic platform offers a novel, objective, and quantitative approach to sperm selection.
  • This stain-free method has the potential to significantly improve sperm selection processes for ICSI and other ARTs.
  • The technology promises to increase ART success rates by providing more accurate and automated sperm analysis and selection.